Transmission mechanism



Auga 10 1926.

3 Sheets-Sheef 1 Filed August 6, 1925 M'fnesses Aug. 10 1926.

A. HOISS TRANSMISSION MECHANISM "Filed Au usi'e, 1925 a Sheets-Sheet 2Ill lllllllefallllIIIIIIIIIIIVIIIII'III Ila,

in or) Iva d0,

lV/iweases Aug. 10 1926. 1,595,719

TRANSMI S SION MECHANISM Filed August 6, 1925 3 Sheets-Sheet 5I'll/#598868 WW V clearness, and taken substantially upon line fF 'gureY Patented Aug.

UNITED Q F ICE- ANTON HOISS, OF BUFFALO, YORK.

This invention TR NSM I N M C A IS Applieation filed August 6, 1925.Serial No. 48,630.

relates-to certain new and useful improvements intransmissionmechanisms, and ias in an" improved va drive gearingparticularly ore particular reference to riabl'e speed and reverseadapted for use in connection with motor vehicles.

The primary object of the invention is to provide a transmissionmechanism of the above kind where in, the usual gears are, norr'nallynot in mesh and have a permanent relative relation s respective shafts,

0 as to not slide upon their operative connect ons" 'he-. 111g madebetween the gears of the 's etsby means of idler pinions movable'laterally of the p driving and driven shafts into and out of Qpfirativeposition.

A further object of the invention provide a transmission mechanism ofthe above kind which operation.

i A further object of the invention .is' to provide laterally movableimprovedrneans for mounting the dlers and improved means.

for efiecting their individual"movementto operative or inop Otherobjects the invention is same consists in erative position.

will 'appearas the nature of better understood, and the the novel form,combina:

tion and arrangement of partslmreinafter more fully described, shown inthe accoladrawings and ei imedy" v In the drawings, wherein likereference corresponding '4 parts r l ying characters indio atethroughout the several views,

Figure 1 is a fragmentary s de elevational 'eotion," showing a"transmiss on mec-hani's rn constructed aecord ancewith the presentinvention, ."tively associated with the clutch 'ofthe driveview, partlyin Figure 2 is a fragmentary top, plan view of the device showninFigurell,

Figure 3 is a rear elevational View thereof,

is an enlarged transverse. see- Figure 4 tional v ew, with Fig'ure 5 isa parts omitted for sake of taken. upon line 5 5 of Figure. 9,

' Fig-urebis a stantially upon place,

. Figure is a v transverse section taken. sub-. line. o;f}F gure 9. butwith the parts, omitted n Figure ishown in.

ertical. longitudinalsection is to is extremely simple and durable inconstruction as'well. as efficient in and'opera view similar to. Figure4' meshing idler pinions 17 taken" substantially upon line 75-7 ofFigiii-e6,"

"Figure 8 s a transverse sectional view taken substantially upon line 88of Figuregj c w'ardly by. means of a footpedal, not shown,

for discontinuing drive from the section ,of

the shaft 5 forwardly of the 'clutclrto the portion or] section thereofrearwardly ofithe The gearing constituting partofthepres ent" inventionco'rrsists' of pairs or sets. of super-imposed gears 7, 8, '9 and 10 theupper gears of the several sets. beingrigidly secured in spaced relationupon the rear sec, tion of the drive shaft 5, and the lower gears ofitheseveral pairs or sets being. seciired upon the forward end of alongitudinal drive-Ii shaft 11 disposed therebelow and'extending rearar'dly-for connection with the usual differential mechanism employed inmotor vehicles at the rear of thelatterl. The overlying ends of the"rear section of shaft 5 and. the shaft 111 are journaled in the ends ofa suitable casing 112 havinga removable cover plate 13, and'thegears ofthe several sets are in spaced relation orout of mesh. As is usual inthis class of devices, the gears progressively decrease insizerearvwardlyon the shaft'o andii'ncrease in size relarwardly on thefshaft11 "so that a varia tion in speed at which the shaft 11 is drivencan-behad. '1 Disposed beside each of the Sets of gears 7., 8 and 9isjan idler pinion, thepinions for the sets of gears 7, Sand: 9 beingrespectively indicated as at 1 1, 15 and 16, anddisp'osed beside the setof gears 10, are .a pair of interand 18,] The pin ions 1.4;, v15,andltlie pinions 17 and 18 are.

transmitted to the shaft 11 for drivingjthe mounted for movementlaterally ortransverselyofthe shafts 5' andll so that the pinion 14 maybe meshed with the gears of the set 7 as shown in Figure 8 fortransmitting the drive from thersha'ft 5; therethrough to the shaft 11at a low speed. The several pinions 14, 15 and 16 are similar in-siZe,-a-nd" the pinion 15 may be moved so as to simultaneously mesh with thegearso f'the set 8 whereby the rotation of shaft 5 may be latter at; anintermediate speed. Inff'a like manner, the idler pinionl'dmay be movedgear thereof as shown in Figure-4 soft-hat shaft 11 is driven in areverse direction for caus1ng rearward travelingmoyemil i Ofthe isemployed.

vehicle in which the 'transmissio'n mechanism The preferred mannermounting the .1 pinions for movement laterally or ftransversely of the;shafts consists in mounting suchfpin ons upon laterally swlngmgarms :19,the'lower ends of which are pivoted as at torupstanding posts orrigidbrackets '21 provided upon the bottom oftheflcasing" 12. The pinions 17and 18 are hothcarried" by-the: same arm 19; while each of the otherpinions 14, 15 and. 16 is carried by asimil ar separate"ar m sothatvrotation of shaft 5' f may: be transmitted to the shaft 11 throughH a single'set ears at a time.

Means is provided for manually causingdesired'one of the pinions-.l4,,15and 16 V for the pinions 17 and 18 to be respectively engaged with itsor their gears, and for causing the others rto bedis V engaged fromthelr cooperat ng setsof gears.

cooperating set of This means preferably embodies tllf pl'O vision of ahorizontal crankshaft-22 fwhich' is disposed longitudinally of and'journaled within the casing'12 atthe outer sides o'fthe" iin differentradial planes. I

arms 19 andnear the upper en'dsof'thelatter, and the cranks, of whichareidisposed Each "crank of l I 'the'shaft 22 is connected to andtransversely i aligned-with the'upper end of oneofthe.

arms '19, and the connections between the cranks and the arms m r y-Onsi1 f, will thus be seen that itmen or links 23. it It fwhen the shaft 22is rotated, one ofthe pinions 14, 15 011 16 may be engaged with its 7cooperating set of c0] pests of gears. while the" others w ll be movedout of engagement with their gears, or the p'inions 1'7 and 18 n1ay V beengaged with their cooperating set of se r s while the pinions' 14, 15.andl 16'are' disengaged from the: cooperating sets of gears thereof: Theparticular set of gears "the lever '27 for "bell crank lever 35 which isrendered operativein this way en-V tirely depends .upon' the degreeofrotation of shaft'22. U onthe forward end of the j whic'lrjmeshesi witha segment gear 25 secured upon the lower end of a vertical shaftcrankshaft 22 is secured a beveled gear 24.

26"that extends upwardly through and is journaled inthe top of the;casing 12 and has'a" vertically swinging hand lever 27 pivoted at oneend thereof to the upperend 10f the same'as at 28," Disposed blltllllftlle lever "27 and concentric with the shaft26' is an arcuate segment 29havmgnotchesunf ts upper edge adapted for selective reception of theadjacent .portlonof the lever 27 "so as to hold the shaft 26 fromrotation when the lever 27' is positioned coincidentiwithandan any ofthese notches. The notches in the segment- 29 are so arranged that'when'the Y pinion 14 is engaged with ;the gears ofxthe set 7,-the lever 27 iscoincident withthe left hand notch of the segment129;while. V whenfthelever 27' i s'p'os1ti0nedto engage the second notch from the left, thepinion'l'djis engaged with" the set "of jgears 8,1'and when the lever 27is positioned "coincident with the third notch from the left'iasshownnin' Figure 2 the pinion 16 is engaged with. the 'setof ggears 9.The-remainingffright' .hand en'd notch of -the segment 291s" disposedto? receive the lever 27 'whenithe pinion 's Hand 7 18 are operativelydisposed as showninffhg- 7 me 4, and itfis thus apparentg that'theoper'ator of the vehicl with facility and ease. in

Means is provided foriantomati cally' ef-V e can accurately positioneffecting the desired drive fecting' release of the fc'lutch7fso"that'the" 7 rear section of'the shaftl5 willnotgbe driven when the lever27 is swunglforif changing 1 gears and this meanspreferably consists ofi a sleeve 30 slida'ble upoirjthe' projecting upper end of the. shafti26 and having vits upper end connected "to the intermediate 7 portionofthe lever '27 "by means" of ai link 31, the lower end of; the sleeve 30having a collar 32"rotatable thereon between pair having onefendbforwardly. and w rd y a rasyaaer wardly and downwardlyprojec ting' armof a is bifurcate I l o of the movable element-of the cluteh f tir It isthus apparent that whenfthe lever27f is raised for releasing the same"from of the segment 29gso that the-shaft 2 end. pivotally attached 'tothe" endfofj-ffi'erear I {the otherarm of which d'and embraces theusua"collar 42w be rotated, an upward pull is exerted upon of spaced annularflanges '33, and, a 11111 34 V ifurcated and pivotediito opposite sidesof the collar 32am" extending" therearwardly extending ar1n"*of the bellcrank l'ever'35gfor effecting rearward release ing movement" of themovableclu-tchmember" ndfitiwill of theclutch 6,; Qnvthe other ha beseen th'at -wh'en" the lever 2T ;is sw1.mg.

downwardly into anotch of the segment 29 the movable member of theclutch 6 will be permitted to return to normal engaged position. In viewof the above it is apparent that the rear section of the drive shaft 5will be idle until such time as the desired gear change has been madeand the lever 27 has been lowered into the coincident notch formaintaining such change operative. The present device involves arelative arrangement of parts readily accessible for renewal and repairand not of a delicate or complicated nature such as will tend to causethe device to readily get out'ot order.- Furthermore, in the absence ofsliding gears, stripping of teeth from the same is rendered unlikely.

It is believed that the construction and operation as well as theadvantages of the present invention will be readily understood andappreciated by those skilled in the art.

Minor changes may be made without de parting from the spirit and scopeof the invention as claimed.

Nhat I claim as new is:

L In combination, a plurality of sets of gears, manually operable meansto selectively render any desired set of gears operative, a clutch fornormally transmitting rotation to corresponding gears of said sets,means to retain said manually operable means" in any position at whichit is set for rendering a desired set of gears operable,-

and means automatically operable uponrelease of said manually operablemeans from said retaining means for releasing said clutch, said manuallyoperable means in cluding a hand lever, and said automatically operablemeans including an operative otthe hand connection between the lever andsaid clutch, and said retaining means including a segment provided withnotches for reception leverwhen the latter is positioned to permitengagement of the clutch and from which the hand lever is disengageablefor effecting release of the clutch.

2. In combination, a plurality of sets of gears, manually operable meansto selectively render any desired setof gears operative, a clutch fornormally transmitting rotation to corresponding gears of said sets,means to retain said manually operable neans in any position at which itis set for rendering a desired set of gears operable, and meansautomatically operable upon release of said manually operable means fromsaid retaining means for releasing said clutch, said manually operablemeans including a vertical rotatable shaft and a hand lever pivoted tothe upper end of said shaft for vertical swinging movement, saidautomatically operable means including an operative connection betweenthe lever and said clutch embodying a sleeve slidable on the verticalshaft with its upper end connected to the lever and its lower end connected to the clutch, and said retaining means including an arcuatesegment provided with notches in its upper edge for reception of thehand lever when the latter is lowered to permit engagement of the clutchand from which the hand lever is disengageable for effecting release ofthe clutch when the hand lever is raised.

In testimony whereof I affix my signa ture.

ANTON HOISS.

